The correct answer is D. Both (ii) and (iii).
Quicklime is a white, caustic alkaline solid produced by heating limestone (calcium carbonate) to a high temperature. It is also known as calcium oxide or burnt lime.
Quicklime is rapid in slacking, which means that it reacts quickly with water to form calcium hydroxide (slaked lime). This reaction is exothermic, meaning that it releases heat.
Quicklime is also good in strength. It is a strong base and can be used to make a variety of products, including cement, mortar, and plaster.
Option (i) is incorrect because quicklime is not slow in setting. It sets quickly when mixed with water.
Option (ii) is correct because quicklime is rapid in slacking. It reacts quickly with water to form calcium hydroxide (slaked lime).
Option (iii) is correct because quicklime is good in strength. It is a strong base and can be used to make a variety of products, including cement, mortar, and plaster.